Lincoln Service Parts 1 › Lincoln Electric 9SM12522-1 POLARITY SWITCH ASBLY M12522-1 Lincoln Electric 9SM12522-1 POLARITY SWITCH ASBLY M12522-1 Sale Price: $486.23 Original Price: $559.17 POLARITY SWITCH ASBLY PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1 Add To Cart Added! POLARITY SWITCH ASBLY PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1